ERP PI (Process Integration) is an enterprise integration platform that provides seamless integration between ERP and non-ERP applications within the organization A2A (Application to Application) or even outside the organization B2B (Business to Business). It allows organizations to exchange information between internal softwares within the company and external systems outside the company.
ERP PO (Process Orchestration) is a tool for automation and optimization of business processes. It combines features of ERP Business Process Management (BPM), ERP Process Integration (PI), and ERP Business Rules Management (BRM). In other words, ERP Process Orchestration is a more advanced version of ERP PI and has all the tools required to integrate applications.
The ERP PO full form is Process Orchestration.